How to stop reboot after kernel panic?

I am attempting to install xen-unstable. This appears to involve building a new kernel and booting from it.

The new kernel does not boot my machine. The boot starts, then I see some messages about loading various dm_ modules, then I see a failed attempt to locate any volume groups. This leads to not being able to find my root volume and shortly after this there is a kernel panic and the machine reboots.

How can I stop the reboot happening so that I can see what caused the panic? I know about the option to echo something into /proc, but this is not suitable as I don't get far enough through the boot process to be able to do this.

The machine started life as an FC5 machine, but is currently running the kernel from the latest xen-unstable. Or not running the kernel, as the case may be.

You'll find that the Xen Hypervisor is in fact a Linux kernel, and although the file system is not mounted read/write, you can still access /proc after the initial part of the kernel booting process. I totally agree that the 'noreboot' on the kernel line is going to be the most elegant way to do it. . You need to put a Q in the Community Support TA for a points refund.

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